Thanks guys! I got his food as small as i could (some pieces were still rather large), and he was finally picking at some of the smaller pieces. I'm not too worried if he doesn't eat the rest of the food right away, because I'm going to do a water change in a couple hours.
Tomorrow I'm going to see if I can entice him with some new food I'm getting tomorrow. I'm also going to get a container for some water for when i change his, so it'll already be the same temp as in his tank, which will come in handy since he's in a tank that's less than a gallon (it was given to me).